Glossary Of Terms - Orbit 57880 User Manual

Appendix A: Connecting to a Rain sensor,
Pump start or Master Valve
Rain Sensor and the Rain Sensor Bypass
Switch (sensor sold separately)
A rain sensor or other type of micro-switch weather sensor may be
connected to the sprinkler timer. The purpose of the sensor is to
stop watering when precipitation is sufficient.
CONNeCTING A RAIN SeNSOR
• Connect the rain sensor wires to the wiring terminal ports
(beige in color) labeled "Sensor" [See Figure A1]
Note: Refer to your rain sensor manual for specific wiring instruc-
tions.
• Place the sensor on/off switch to the "on" position to begin
operation.
SENSOR COM PUMP
TIMER
Figure A1: Connecting a Rain Sensor
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RAIN SeNSOR BYPASS
This sprinkler timer is equipped with a sensor override "on/off"
switch. This switch is for use during maintenance and repairs, so the
sprinkler timer can be operated even if the rain sensor is in active
mode.
ImportaNt: If the rain sensor switch is in the "on" position and no sen-
sor is connected, the sprinkler timer will not operate. To resume sprinkler
timer operation place the switch in the off position
PUmP START & mASTeR vALve
This sprinkler timer allows a master valve or pump start relay to
operate whenever a station is on.
Note: If you are activating a pump from this timer, you must purchase a
Pump Start Relay.
From the pump start relay (or master valve); connect one wire to the
"Pump" terminal and the other wire to the "Common" terminal. [See
Figure A2]
PUMP
SENSOR COM
TIMER
To Pump
24v
Coil
To Power
PUMP START RELAY
Figure A2: Connecting Pump Start or Master Valve

Glossary of Terms

TERM DEFINITION
Controller See sprinkler timer
Cycle Start Time The time the program begins watering the first station
Irrigation Valve, Used in conjunction with sprinkler timers and are a convenient way of delivering water to lawns,
Automatic plants and gardens
Master Valve A valve that prohibits water from reaching "Station Valves"
A feature that allows a program to be operated multiple times on the same day
Multiple Start Times
When a "Start Time" is set before the previous program has completed
Overlapping Programs
Consists of 1 or more "Start Time(s)," a "Watering Option" (Days of Week, Interval or Odd/Even Days)
Program (A, or B)
and which stations will water
Rain Delay A feature that prevents the sprinkler timer from running its scheduled watering program for a
specific duration
Solenoid The electrical part on an irrigation valve that opens and closes the valve
Sprinkler Timer A device that is responsible for turning an automatic irrigation system on and off
An area where the irrigation is all controlled by a single control valve
Station
See irrigation valve
Valve
Consists of Days of Week, Interval or Odd/Even Days use in programming
Watering Option
Watering Program See program
Zones See station
FUSe
The 0.75 amp slow-blow fuse provides circuit protection. For replacement, use a 0.75 amp fuse.
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